Table 4 Main Performance Parameter of LF481Q3 Engine
Item Unit Model and parameter
Model
Four-stroke, water cooling, 4 cylinders in line,
16 valves, double overhead camshafts and
multipoint electronic injection
Cylinder bore mm 81
Stroke mm 77
Total delivery capacity L 1.6
Compression ratio 9.5:1
Lubricant capacity L 4
Fuel No. 93# unleaded gasoline
Engine oil No. Not lower than SG grade (GB11121-1995)
Starting mode Electric start
Lubricating mode Pressure and splash combined type
Cooling mode
Forced circulating water cooling
Rated rotation speed r/min 6000
Rated power Kw 78
Maximum torque ( 3505000_r/min )
N·m /rmp 137N·m / 3500rmp
Minimum fuel consumption g/kw.h ≤270
Minimum idle load stabilized rotation
speed (idle speed)
r/min 800±50
Low idle
speed
CO≤0.3%, HC≤80ppm
Emission limit at idle speed
High idle
speed
CO≤0.2%, HC≤60ppm
Ignition advance angle (idle speed) 5±3º
Intake valve clearance (cool)
0.20～0.25
Exhaust valve clearance (cool)
0.25～0.30
Without transmission 650×605×640
External
dimension
With transmission
mm
1010×605×640
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